John Candy widely accepted to a be a comic great, but none of his films ever rate very highly. I suspect that rather than a Top 50 ever - which is so open to argument - a Top 10 by genre would be more useful.
So you could argue that in the Top 10 Comedies, a John Candy film might get in. You...
Juno: low key but engaging. Impressive performance from the lead actress. "Dad" was a brilliant support act, as were the boy friend and best friend. Saw this with my 13 year old (daughter) and 15 year old (son) and they both enjoyed it to. It's not Little Miss Sunshine, but it's worth seeing...